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path: root/drivers/pnp/interface.c
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-rw-r--r--drivers/pnp/interface.c468
1 files changed, 468 insertions, 0 deletions
diff --git a/drivers/pnp/interface.c b/drivers/pnp/interface.c
new file mode 100644
index 00000000000..53fac8ba5d5
--- /dev/null
+++ b/drivers/pnp/interface.c
@@ -0,0 +1,468 @@
+/*
+ * interface.c - contains everything related to the user interface
+ *
+ * Some code, especially possible resource dumping is based on isapnp_proc.c (c) Jaroslav Kysela <perex@suse.cz>
+ * Copyright 2002 Adam Belay <ambx1@neo.rr.com>
+ *
+ */
+
+#include <linux/pnp.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/list.h>
+#include <linux/types.h>
+#include <linux/stat.h>
+#include <linux/ctype.h>
+#include <linux/slab.h>
+#include <asm/uaccess.h>
+
+#include "base.h"
+
+struct pnp_info_buffer {
+ char *buffer; /* pointer to begin of buffer */
+ char *curr; /* current position in buffer */
+ unsigned long size; /* current size */
+ unsigned long len; /* total length of buffer */
+ int stop; /* stop flag */
+ int error; /* error code */
+};
+
+typedef struct pnp_info_buffer pnp_info_buffer_t;
+
+static int pnp_printf(pnp_info_buffer_t * buffer, char *fmt,...)
+{
+ va_list args;
+ int res;
+
+ if (buffer->stop || buffer->error)
+ return 0;
+ va_start(args, fmt);
+ res = vsnprintf(buffer->curr, buffer->len - buffer->size, fmt, args);
+ va_end(args);
+ if (buffer->size + res >= buffer->len) {
+ buffer->stop = 1;
+ return 0;
+ }
+ buffer->curr += res;
+ buffer->size += res;
+ return res;
+}
+
+static void pnp_print_port(pnp_info_buffer_t *buffer, char *space, struct pnp_port *port)
+{
+ pnp_printf(buffer, "%sport 0x%x-0x%x, align 0x%x, size 0x%x, %i-bit address decoding\n",
+ space, port->min, port->max, port->align ? (port->align-1) : 0, port->size,
+ port->flags & PNP_PORT_FLAG_16BITADDR ? 16 : 10);
+}
+
+static void pnp_print_irq(pnp_info_buffer_t *buffer, char *space, struct pnp_irq *irq)
+{
+ int first = 1, i;
+
+ pnp_printf(buffer, "%sirq ", space);
+ for (i = 0; i < PNP_IRQ_NR; i++)
+ if (test_bit(i, irq->map)) {
+ if (!first) {
+ pnp_printf(buffer, ",");
+ } else {
+ first = 0;
+ }
+ if (i == 2 || i == 9)
+ pnp_printf(buffer, "2/9");
+ else
+ pnp_printf(buffer, "%i", i);
+ }
+ if (bitmap_empty(irq->map, PNP_IRQ_NR))
+ pnp_printf(buffer, "<none>");
+ if (irq->flags & IORESOURCE_IRQ_HIGHEDGE)
+ pnp_printf(buffer, " High-Edge");
+ if (irq->flags & IORESOURCE_IRQ_LOWEDGE)
+ pnp_printf(buffer, " Low-Edge");
+ if (irq->flags & IORESOURCE_IRQ_HIGHLEVEL)
+ pnp_printf(buffer, " High-Level");
+ if (irq->flags & IORESOURCE_IRQ_LOWLEVEL)
+ pnp_printf(buffer, " Low-Level");
+ pnp_printf(buffer, "\n");
+}
+
+static void pnp_print_dma(pnp_info_buffer_t *buffer, char *space, struct pnp_dma *dma)
+{
+ int first = 1, i;
+ char *s;
+
+ pnp_printf(buffer, "%sdma ", space);
+ for (i = 0; i < 8; i++)
+ if (dma->map & (1<<i)) {
+ if (!first) {
+ pnp_printf(buffer, ",");
+ } else {
+ first = 0;
+ }
+ pnp_printf(buffer, "%i", i);
+ }
+ if (!dma->map)
+ pnp_printf(buffer, "<none>");
+ switch (dma->flags & IORESOURCE_DMA_TYPE_MASK) {
+ case IORESOURCE_DMA_8BIT:
+ s = "8-bit";
+ break;
+ case IORESOURCE_DMA_8AND16BIT:
+ s = "8-bit&16-bit";
+ break;
+ default:
+ s = "16-bit";
+ }
+ pnp_printf(buffer, " %s", s);
+ if (dma->flags & IORESOURCE_DMA_MASTER)
+ pnp_printf(buffer, " master");
+ if (dma->flags & IORESOURCE_DMA_BYTE)
+ pnp_printf(buffer, " byte-count");
+ if (dma->flags & IORESOURCE_DMA_WORD)
+ pnp_printf(buffer, " word-count");
+ switch (dma->flags & IORESOURCE_DMA_SPEED_MASK) {
+ case IORESOURCE_DMA_TYPEA:
+ s = "type-A";
+ break;
+ case IORESOURCE_DMA_TYPEB:
+ s = "type-B";
+ break;
+ case IORESOURCE_DMA_TYPEF:
+ s = "type-F";
+ break;
+ default:
+ s = "compatible";
+ break;
+ }
+ pnp_printf(buffer, " %s\n", s);
+}
+
+static void pnp_print_mem(pnp_info_buffer_t *buffer, char *space, struct pnp_mem *mem)
+{
+ char *s;
+
+ pnp_printf(buffer, "%sMemory 0x%x-0x%x, align 0x%x, size 0x%x",
+ space, mem->min, mem->max, mem->align, mem->size);
+ if (mem->flags & IORESOURCE_MEM_WRITEABLE)
+ pnp_printf(buffer, ", writeable");
+ if (mem->flags & IORESOURCE_MEM_CACHEABLE)
+ pnp_printf(buffer, ", cacheable");
+ if (mem->flags & IORESOURCE_MEM_RANGELENGTH)
+ pnp_printf(buffer, ", range-length");
+ if (mem->flags & IORESOURCE_MEM_SHADOWABLE)
+ pnp_printf(buffer, ", shadowable");
+ if (mem->flags & IORESOURCE_MEM_EXPANSIONROM)
+ pnp_printf(buffer, ", expansion ROM");
+ switch (mem->flags & IORESOURCE_MEM_TYPE_MASK) {
+ case IORESOURCE_MEM_8BIT:
+ s = "8-bit";
+ break;
+ case IORESOURCE_MEM_8AND16BIT:
+ s = "8-bit&16-bit";
+ break;
+ case IORESOURCE_MEM_32BIT:
+ s = "32-bit";
+ break;
+ default:
+ s = "16-bit";
+ }
+ pnp_printf(buffer, ", %s\n", s);
+}
+
+static void pnp_print_option(pnp_info_buffer_t *buffer, char *space,
+ struct pnp_option *option, int dep)
+{
+ char *s;
+ struct pnp_port *port;
+ struct pnp_irq *irq;
+ struct pnp_dma *dma;
+ struct pnp_mem *mem;
+
+ if (dep) {
+ switch (option->priority) {
+ case PNP_RES_PRIORITY_PREFERRED:
+ s = "preferred";
+ break;
+ case PNP_RES_PRIORITY_ACCEPTABLE:
+ s = "acceptable";
+ break;
+ case PNP_RES_PRIORITY_FUNCTIONAL:
+ s = "functional";
+ break;
+ default:
+ s = "invalid";
+ }
+ pnp_printf(buffer, "Dependent: %02i - Priority %s\n",dep, s);
+ }
+
+ for (port = option->port; port; port = port->next)
+ pnp_print_port(buffer, space, port);
+ for (irq = option->irq; irq; irq = irq->next)
+ pnp_print_irq(buffer, space, irq);
+ for (dma = option->dma; dma; dma = dma->next)
+ pnp_print_dma(buffer, space, dma);
+ for (mem = option->mem; mem; mem = mem->next)
+ pnp_print_mem(buffer, space, mem);
+}
+
+
+static ssize_t pnp_show_options(struct device *dmdev, char *buf)
+{
+ struct pnp_dev *dev = to_pnp_dev(dmdev);
+ struct pnp_option * independent = dev->independent;
+ struct pnp_option * dependent = dev->dependent;
+ int ret, dep = 1;
+
+ pnp_info_buffer_t *buffer = (pnp_info_buffer_t *)
+ pnp_alloc(sizeof(pnp_info_buffer_t));
+ if (!buffer)
+ return -ENOMEM;
+
+ buffer->len = PAGE_SIZE;
+ buffer->buffer = buf;
+ buffer->curr = buffer->buffer;
+ if (independent)
+ pnp_print_option(buffer, "", independent, 0);
+
+ while (dependent){
+ pnp_print_option(buffer, " ", dependent, dep);
+ dependent = dependent->next;
+ dep++;
+ }
+ ret = (buffer->curr - buf);
+ kfree(buffer);
+ return ret;
+}
+
+static DEVICE_ATTR(options,S_IRUGO,pnp_show_options,NULL);
+
+
+static ssize_t pnp_show_current_resources(struct device *dmdev, char *buf)
+{
+ struct pnp_dev *dev = to_pnp_dev(dmdev);
+ int i, ret;
+ pnp_info_buffer_t *buffer;
+
+ if (!dev)
+ return -EINVAL;
+
+ buffer = (pnp_info_buffer_t *) pnp_alloc(sizeof(pnp_info_buffer_t));
+ if (!buffer)
+ return -ENOMEM;
+ buffer->len = PAGE_SIZE;
+ buffer->buffer = buf;
+ buffer->curr = buffer->buffer;
+
+ pnp_printf(buffer,"state = ");
+ if (dev->active)
+ pnp_printf(buffer,"active\n");
+ else
+ pnp_printf(buffer,"disabled\n");
+
+ for (i = 0; i < PNP_MAX_PORT; i++) {
+ if (pnp_port_valid(dev, i)) {
+ pnp_printf(buffer,"io");
+ if (pnp_port_flags(dev, i) & IORESOURCE_DISABLED)
+ pnp_printf(buffer," disabled\n");
+ else
+ pnp_printf(buffer," 0x%lx-0x%lx\n",
+ pnp_port_start(dev, i),
+ pnp_port_end(dev, i));
+ }
+ }
+ for (i = 0; i < PNP_MAX_MEM; i++) {
+ if (pnp_mem_valid(dev, i)) {
+ pnp_printf(buffer,"mem");
+ if (pnp_mem_flags(dev, i) & IORESOURCE_DISABLED)
+ pnp_printf(buffer," disabled\n");
+ else
+ pnp_printf(buffer," 0x%lx-0x%lx\n",
+ pnp_mem_start(dev, i),
+ pnp_mem_end(dev, i));
+ }
+ }
+ for (i = 0; i < PNP_MAX_IRQ; i++) {
+ if (pnp_irq_valid(dev, i)) {
+ pnp_printf(buffer,"irq");
+ if (pnp_irq_flags(dev, i) & IORESOURCE_DISABLED)
+ pnp_printf(buffer," disabled\n");
+ else
+ pnp_printf(buffer," %ld\n",
+ pnp_irq(dev, i));
+ }
+ }
+ for (i = 0; i < PNP_MAX_DMA; i++) {
+ if (pnp_dma_valid(dev, i)) {
+ pnp_printf(buffer,"dma");
+ if (pnp_dma_flags(dev, i) & IORESOURCE_DISABLED)
+ pnp_printf(buffer," disabled\n");
+ else
+ pnp_printf(buffer," %ld\n",
+ pnp_dma(dev, i));
+ }
+ }
+ ret = (buffer->curr - buf);
+ kfree(buffer);
+ return ret;
+}
+
+extern struct semaphore pnp_res_mutex;
+
+static ssize_t
+pnp_set_current_resources(struct device * dmdev, const char * ubuf, size_t count)
+{
+ struct pnp_dev *dev = to_pnp_dev(dmdev);
+ char *buf = (void *)ubuf;
+ int retval = 0;
+
+ if (dev->status & PNP_ATTACHED) {
+ retval = -EBUSY;
+ pnp_info("Device %s cannot be configured because it is in use.", dev->dev.bus_id);
+ goto done;
+ }
+
+ while (isspace(*buf))
+ ++buf;
+ if (!strnicmp(buf,"disable",7)) {
+ retval = pnp_disable_dev(dev);
+ goto done;
+ }
+ if (!strnicmp(buf,"activate",8)) {
+ retval = pnp_activate_dev(dev);
+ goto done;
+ }
+ if (!strnicmp(buf,"fill",4)) {
+ if (dev->active)
+ goto done;
+ retval = pnp_auto_config_dev(dev);
+ goto done;
+ }
+ if (!strnicmp(buf,"auto",4)) {
+ if (dev->active)
+ goto done;
+ pnp_init_resource_table(&dev->res);
+ retval = pnp_auto_config_dev(dev);
+ goto done;
+ }
+ if (!strnicmp(buf,"clear",5)) {
+ if (dev->active)
+ goto done;
+ pnp_init_resource_table(&dev->res);
+ goto done;
+ }
+ if (!strnicmp(buf,"get",3)) {
+ down(&pnp_res_mutex);
+ if (pnp_can_read(dev))
+ dev->protocol->get(dev, &dev->res);
+ up(&pnp_res_mutex);
+ goto done;
+ }
+ if (!strnicmp(buf,"set",3)) {
+ int nport = 0, nmem = 0, nirq = 0, ndma = 0;
+ if (dev->active)
+ goto done;
+ buf += 3;
+ pnp_init_resource_table(&dev->res);
+ down(&pnp_res_mutex);
+ while (1) {
+ while (isspace(*buf))
+ ++buf;
+ if (!strnicmp(buf,"io",2)) {
+ buf += 2;
+ while (isspace(*buf))
+ ++buf;
+ dev->res.port_resource[nport].start = simple_strtoul(buf,&buf,0);
+ while (isspace(*buf))
+ ++buf;
+ if(*buf == '-') {
+ buf += 1;
+ while (isspace(*buf))
+ ++buf;
+ dev->res.port_resource[nport].end = simple_strtoul(buf,&buf,0);
+ } else
+ dev->res.port_resource[nport].end = dev->res.port_resource[nport].start;
+ dev->res.port_resource[nport].flags = IORESOURCE_IO;
+ nport++;
+ if (nport >= PNP_MAX_PORT)
+ break;
+ continue;
+ }
+ if (!strnicmp(buf,"mem",3)) {
+ buf += 3;
+ while (isspace(*buf))
+ ++buf;
+ dev->res.mem_resource[nmem].start = simple_strtoul(buf,&buf,0);
+ while (isspace(*buf))
+ ++buf;
+ if(*buf == '-') {
+ buf += 1;
+ while (isspace(*buf))
+ ++buf;
+ dev->res.mem_resource[nmem].end = simple_strtoul(buf,&buf,0);
+ } else
+ dev->res.mem_resource[nmem].end = dev->res.mem_resource[nmem].start;
+ dev->res.mem_resource[nmem].flags = IORESOURCE_MEM;
+ nmem++;
+ if (nmem >= PNP_MAX_MEM)
+ break;
+ continue;
+ }
+ if (!strnicmp(buf,"irq",3)) {
+ buf += 3;
+ while (isspace(*buf))
+ ++buf;
+ dev->res.irq_resource[nirq].start =
+ dev->res.irq_resource[nirq].end = simple_strtoul(buf,&buf,0);
+ dev->res.irq_resource[nirq].flags = IORESOURCE_IRQ;
+ nirq++;
+ if (nirq >= PNP_MAX_IRQ)
+ break;
+ continue;
+ }
+ if (!strnicmp(buf,"dma",3)) {
+ buf += 3;
+ while (isspace(*buf))
+ ++buf;
+ dev->res.dma_resource[ndma].start =
+ dev->res.dma_resource[ndma].end = simple_strtoul(buf,&buf,0);
+ dev->res.dma_resource[ndma].flags = IORESOURCE_DMA;
+ ndma++;
+ if (ndma >= PNP_MAX_DMA)
+ break;
+ continue;
+ }
+ break;
+ }
+ up(&pnp_res_mutex);
+ goto done;
+ }
+ done:
+ if (retval < 0)
+ return retval;
+ return count;
+}
+
+static DEVICE_ATTR(resources,S_IRUGO | S_IWUSR,
+ pnp_show_current_resources,pnp_set_current_resources);
+
+static ssize_t pnp_show_current_ids(struct device *dmdev, char *buf)
+{
+ char *str = buf;
+ struct pnp_dev *dev = to_pnp_dev(dmdev);
+ struct pnp_id * pos = dev->id;
+
+ while (pos) {
+ str += sprintf(str,"%s\n", pos->id);
+ pos = pos->next;
+ }
+ return (str - buf);
+}
+
+static DEVICE_ATTR(id,S_IRUGO,pnp_show_current_ids,NULL);
+
+int pnp_interface_attach_device(struct pnp_dev *dev)
+{
+ device_create_file(&dev->dev,&dev_attr_options);
+ device_create_file(&dev->dev,&dev_attr_resources);
+ device_create_file(&dev->dev,&dev_attr_id);
+ return 0;
+}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-13 23:40:02 +0000